Question 1:
Give five examples of the necessity of energy in a metabolic process.
Give five examples of the necessity of energy in a metabolic process.
Answer:
• Maintaining body temperature at the optimal temperature of 37 °C.
• Muscle contractions to enable movement.
• Cell division whereby new cells are produced for growth and development.
• Absorption of digested food through active transport.
• Synthesis of lipids, hormones, proteins and enzymes.
Question 2:
State the main substrate in the production of energy.
State the main substrate in the production of energy.
Answer:
Carbohydrate (glucose).
Question 3:
State the meaning of cellular respiration and the types of cellular respiration.
State the meaning of cellular respiration and the types of cellular respiration.
Answer:
Cellular respiration is the oxidation process of organic molecules through a few stages to release energy.
The main substrate for cellular respiration is glucose.
There are two types of cellular respiration:
aerobic respiration and anaerobic respiration.
Question 4:
Explain how humans, animals and plants acquire glucose to produce energy.
Explain how humans, animals and plants acquire glucose to produce energy.
Answer:
In humans and animals, glucose is obtained through the breakdown of carbohydrates whereas in plants, glucose is produced through photosynthesis.